Advanced Optical Materials最新文献_第3页

In Situ Label-Free Monitoring of Riboflavin Concentration in Shewanella via a Fiber-Optic Biosensor Modified by Ti3C2-MXene@ SGNps Composites (Advanced Optical Materials 33/2024) 通过由 Ti3C2-MXene@ SGNps 复合材料改性的光纤生物传感器原位无标记监测雪旺菌中核黄素的浓度（先进光学材料 33/2024）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-24 DOI: 10.1002/adom.202470105

Po Jin, Enze Zhou, Liangliang Cheng, Wanlu Zheng, Yong Zhao, Shuang Zhai, Ya-nan Zhang

引用次数: 0

Effective Out-Of-Plane Thermal Conductivity of Silicene by Optothermal Raman Spectroscopy (Advanced Optical Materials 33/2024) 通过光热拉曼光谱分析硅烯的有效平面外导热性（先进光学材料 33/2024）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-24 DOI: 10.1002/adom.202470107

Eleonora Bonaventura, Daya. S. Dhungana, Chiara Massetti, Jacopo Pedrini, Carlo Grazianetti, Christian Martella, Fabio Pezzoli, Alessandro Molle, Emiliano Bonera

引用次数: 0

Free-Charge Carrier Generation in Homojunction Non-Polymeric Organic Semiconductor Films – The Role of the Optical Frequency Dielectric Constant

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-21 DOI: 10.1002/adom.202401825

Neil Mallo, Shaun McAnally, Hui Jin, Eucalyptus Brooks, Ronan Chu, Mohammad Babazadeh, James Smyth, David M. Huang, Nicholas Hight-Huf, Obadiah G. Reid, Garry Rumbles, Paul L. Burn, Ian R. Gentle, Paul E. Shaw

{"title":"Free-Charge Carrier Generation in Homojunction Non-Polymeric Organic Semiconductor Films – The Role of the Optical Frequency Dielectric Constant","authors":"Neil Mallo, Shaun McAnally, Hui Jin, Eucalyptus Brooks, Ronan Chu, Mohammad Babazadeh, James Smyth, David M. Huang, Nicholas Hight-Huf, Obadiah G. Reid, Garry Rumbles, Paul L. Burn, Ian R. Gentle, Paul E. Shaw","doi":"10.1002/adom.202401825","DOIUrl":"https://doi.org/10.1002/adom.202401825","url":null,"abstract":"Engineering the dielectric constant (ε) to lower the exciton binding energy of the light-absorbing semiconductor can improve organic photovoltaic (OPV) device performance. Here, a series of materials are reported with 2-(3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile (INCN) acceptor end groups and a central glycolated bis(4H-cyclopenta[2,1-b:3,4-b′]dithiophene) unit with large low-frequency (εlf = 7.4–7.9 at 0.1–0.2 MHz) and optical-frequency (εopt up to 6.6 at 2 × 1014 Hz) dielectric constants. The INCN end groups differed in whether they were protonated, chlorinated, or fluorinated, with the latter having the highest εopt. An εopt of 6.6 is predicted to lead to a low exciton binding energy of ≈0.04 eV. Time-resolved microwave conductivity measurements showed a temperature-dependent yield–mobility product, with it increasing linearly from 340 K. The onset temperature was near that required to overcome the calculated exciton binding energy and indicates increased free charge generation in a homojunction film. Room temperature transient absorption spectroscopy revealed that photoexcitation rapidly converted to a lower energy state that was consistent with the formation of polarons or a charge transfer state. This work provides experimental evidence of the importance of εopt for the generation of free charges, and a strategy for development of efficient single chromophore homojunction OPV devices.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"12 36","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High Reverse Intersystem Crossing Rate Diminishes the Impact of Conformational Disorder Phenomenon in Solid-State TADF

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-18 DOI: 10.1002/adom.202401819

Tomas Serevičius, Rokas Skaisgiris, Sigitas Tumkevičius, Jelena Dodonova-Vaitkūnienė, Saulius Juršėnas

{"title":"High Reverse Intersystem Crossing Rate Diminishes the Impact of Conformational Disorder Phenomenon in Solid-State TADF","authors":"Tomas Serevičius, Rokas Skaisgiris, Sigitas Tumkevičius, Jelena Dodonova-Vaitkūnienė, Saulius Juršėnas","doi":"10.1002/adom.202401819","DOIUrl":"https://doi.org/10.1002/adom.202401819","url":null,"abstract":"Embedding donor–acceptor type thermally activated delayed fluorescence (TADF) molecules in a rigid surrounding lead to structural inhomogeneity, and deteriorating emission decay rates. Designing TADF structures with hampered rotational flexibility between donor and acceptor structural units is shown to lower the conformational disorder. However, in this work, it is shown that it is not always enough. In fact, the negative impact of conformational inhomogeneity may be reduced by lowering the singlet-triplet energy gap (ΔEST) and boosting the reverse intersystem crossing (rISC) rate while preserving the same donor-acceptor orientation. In such cases the lower ΔEST enables the early triplet upconversion even from the conformers with unfavorably low D-A twist angles, which is not observed in compounds with larger ΔEST. In this way, the temporal shifts of prompt and delayed fluorescence are evidently reduced. When the reverse intersystem crossing is inactive at low temperatures, nearly the same fluorescence peak shifts are observed, as expected for compounds with similar molecular geometry. In this way, low ΔEST and rapid rISC are shown to be of fundamental importance not only for TADF efficiency but also for the temporal dynamics in the solid-state.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"12 36","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Efficient Aggregation-Induced Chiral TADF Molecules Exhibiting Prolonged Lifetime in Living Cells under Hypoxic Stress

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-18 DOI: 10.1002/adom.202401844

Danfeng Ye, Guangrong Zheng, Amjad Ali, Glib V. Baryshnikov, Hans Ågren, Shan Li, Xianzhi Chai, Liangliang Zhu

{"title":"Highly Efficient Aggregation-Induced Chiral TADF Molecules Exhibiting Prolonged Lifetime in Living Cells under Hypoxic Stress","authors":"Danfeng Ye, Guangrong Zheng, Amjad Ali, Glib V. Baryshnikov, Hans Ågren, Shan Li, Xianzhi Chai, Liangliang Zhu","doi":"10.1002/adom.202401844","DOIUrl":"https://doi.org/10.1002/adom.202401844","url":null,"abstract":"Thermally activated delayed fluorescence (TADF) materials have garnered significant attention as potential candidates for biological photoluminescence imaging. However, the achievement of tunable chiral TADF materials through aggregated and self-assembled processes remains a formidable challenge. In this study, four donor–acceptor–donor type chiral TADF molecules, designed by directly linking electron-donating moieties (phenoxazine, phenothiazine or 1-phenyl-1,2,3,4-tetrahydroisoquinoline) with an electron-acceptor unit (diphenyl sulfone), as promising candidates for luminescent imaging applications are presented. The experimental investigation reveals that these chiral TADF materials possess remarkably small ΔEST values, promoting efficient reverse intersystem crossing (RISC). Additionally, they exhibit aggregation-induced emission and long-delayed luminescent lifetimes affected by the aggregated and self-assembled state. Moreover, deoxygenation significantly enhances the emission, enabling high-contrast hypoxia probing, which shows great potential for high-contrast photoluminescence imaging in living cells. This work not only offers a molecular design strategy for chiral TADF materials but also extends the diverse biological applications of high-contrast hypoxia detection in the biological field.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"12 36","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental Realization of Subwavelength Spoof Plasmonic Bound States in the Continuum and Ultra-Sensitive Detection

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-18 DOI: 10.1002/adom.202401906

Ruoxi Zhao, Jiali Ma, Ying Luo, Yingzhou Huang, Shunbo Li, Li Chen, Yi Xu, Li Wang

{"title":"Experimental Realization of Subwavelength Spoof Plasmonic Bound States in the Continuum and Ultra-Sensitive Detection","authors":"Ruoxi Zhao, Jiali Ma, Ying Luo, Yingzhou Huang, Shunbo Li, Li Chen, Yi Xu, Li Wang","doi":"10.1002/adom.202401906","DOIUrl":"https://doi.org/10.1002/adom.202401906","url":null,"abstract":"Optical bound states in the continuum (BICs) lies in side the continuum and coexists with extended waves, but it remains perfectly confined without any radiation. This unique property of BICs has led to numerous applications, such as highly surface-sensitive and spectrally sharp resonances for photonic biosensors. However, it remains challenging to experimentally realize the BICs in a single-particle system, especially for subwavelength structures. This study presents the existence of optical BICs in a subwavelength metallic microstructure, and quasi-BICs are observed experimentally in a waveguide system with only a single optimized aluminum meta-particle. This plasmonic BICs is resulting from the destructive interference of two localized surface plasmon modes. Benefiting from its strong localized field confinement and substrate-free merit of BICs, the experimentally measured quality factor (Q-factor) of this transmission dip reach to 273. Additionally, this meta-particle is experimentally verified to show a good sensitivity for both solids and liquids through the spectral shift of the BICs caused transmission dip. This finding extends the optical BICs to a subwavelength scale and opens practical application opportunities for ultrasmall-quantity detection of biochemical substances.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"12 36","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142868656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resonantly Enhanced Infrared Up-Conversion in Double-Step Asymmetric Subwavelength Grating Structure (Advanced Optical Materials 32/2024) 双阶非对称亚波长光栅结构中的共振增强型红外上转换（先进光学材料 32/2024）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-14 DOI: 10.1002/adom.202470099

Lal Krishna Anitha Kumari Sreekantan Nair, Jyothsna Konkada Manattayil, Jayanta Deka, Rabindra Biswas, Varun Raghunathan

{"title":"Resonantly Enhanced Infrared Up-Conversion in Double-Step Asymmetric Subwavelength Grating Structure (Advanced Optical Materials 32/2024)","authors":"Lal Krishna Anitha Kumari Sreekantan Nair, Jyothsna Konkada Manattayil, Jayanta Deka, Rabindra Biswas, Varun Raghunathan","doi":"10.1002/adom.202470099","DOIUrl":"https://doi.org/10.1002/adom.202470099","url":null,"abstract":"Infrared Up-Conversion in Double-Step Asymmetric Subwavelength Grating StructureIn article number 2401070, Varun Raghunathan and co-workers study the nonlinear optical up-conversion of the mid-infrared to visible wavelength range through third-order sum-frequency generation (TSFG) process using novel double-step amorphous germanium one-dimensional sub-wavelength grating structures supporting quasi-bound states in the continuum (quasi-BIC) resonances in the mid-infrared (3–3.5 mm). One-dimensional dual step gratings on the quartz substrate are shown in the bottom part of the image. The primary (with central hole) and secondary mirrors inside the reflective objective are shown as discs (glassy brown) in the middle part. Cylindrical beams represent two mixing beams: pump (orange) and mid-infrared (pink) along with the generated TSFG signal (green). Pulses with arrows represent the incoming (illumination) and outgoing (collection) beams. The central obscuration caused by the secondary mirror is also clearly illustrated, which is the main theme of the work.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"12 32","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202470099","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead: (Advanced Optical Materials 32/2024) 刊头：（先进光学材料 32/2024）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-14 DOI: 10.1002/adom.202470104

引用次数: 0

Fiber-Integrated van der Waals Quantum Sensor with an Optimal Cavity Interface (Advanced Optical Materials 32/2024) 具有最佳腔体界面的光纤集成范德华量子传感器（先进光学材料 32/2024）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2024-11-14 DOI: 10.1002/adom.202470096

Jong Sung Moon, Benjamin Whitefield, Lesley Spencer, Mehran Kianinia, Madeline Hennessey, Milos Toth, Woong Bae Jeon, Je-Hyung Kim, Igor Aharonovich

引用次数: 0

Large-Scale Fabrication of Room-Temperature Phosphorescence Cellulose Filaments with Color-Tunable Afterglows (Advanced Optical Materials 32/2024) 大规模制造具有颜色可调余辉的室温磷光纤维素灯丝（先进光学材料 32/2024）

IF 8 2区材料科学